how can i restart my itunes from new?

Hey spud the head,

Thanks for the question. A good step would be to create an alternate iTunes library and start with that:

iTunes: How to open an alternate iTunes Library file or create a new one

http://support.apple.com/kb/HT1589

iTunes 11 for Windows: Use multiple iTunes libraries

http://support.apple.com/kb/PH12366

Tip: For best results, if you create additional iTunes libraries, don’t name the new libraries “iTunes” or “iTunes Music.” Make sure each iTunes library has its own unique name so you’ll know which is which.

If applicable, you may want to back up your iTunes library beforehand:

iTunes: Back up your iTunes library by copying to an external hard drive

http://support.apple.com/kb/HT1751

Thanks,

Matt M.